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Finding the Fourth Proportional to 104,220.81, 143,825.22 and 56,474.15

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Solution

The fourth proportional to 104,220.81, 143,825.22 and 56,474.15 is: 77,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,220.81 : 143,825.22 = 56,474.15 : x
  2. Step 2: Convert to fraction form
    104,220.81/143,825.22 = 56,474.15/x
  3. Step 3: Cross multiply
    104,220.81x = 143,825.22 × 56,474.15
  4. Step 4: Simplify right side
    104,220.81x = 8,122,406,328.94
  5. Step 5: Solve for x
    x = 8,122,406,328.94/104,220.81
  6. Step 6: Final answer
    x = 77,934.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.